A. ADJUSTABLE TOILET SEAT - The inflatable toilet seat offers extra comfort by covering the hard toilet seat and supporting various levels of firmness. You can press the air nozzle, and the upgraded air nozzle enables you to adjust the air volume to meet your sitting comfort needs. NOTE: Close the adjustable nozzle cover when the adjustment is finished. It is a suitable toilet seat support cushion for adults, seniors, and disabled people to relieve tailbone pain. B. SAFE & EASY TO CLEAN - It is made of thickened PVC material, which is durable and easy to clean. It has passed a 24 - hour air leakage test, so there is less concern about air leakage, providing a better using experience. C. LIGHTWEIGHT AND PORTABLE - The toilet seat cushion weighs only 0.45lb and can bear up to 220lb/100kg. It can be placed in your backpack or pocket, making it convenient to carry around. D. EASY TO INFLATE - With the upgraded air valve, clean the nozzle before inflating. You can blow by mouth or use a pump to inflate (pump not included). For hygiene reasons, it is recommended to use a pump to inflate. Due to the nature of inflatable products, air needs to be replenished, which is recommended once every 3 - 5 days. Note: The inflatable cushion comes with four suction cups. The two on the back can hold all types of toilet lids, while the two suction cups in the middle can only fully adhere to part of the toilet seat cover.